My argument is that hitler enforced private property, targeted socialist/communists/syndicalists, purged his party of any (night of the long knives), etc etc...
It's a long list, go educate yourself.
Umm. His opinion (and our opinions as well) are irrelevant.
Point out where he is factually wrong.
Is he wrong about citing any of those leftists killing other leftists?
Your argument rests on Hitler being right wing because he killed socialists, so did every communist.